Lawnmower, Strimmer and Chainsaw Oil and Fuel: A Small Engine Care Guide
Which oil your lawnmower needs, two-stroke mix ratios for strimmers and chainsaws, why E10 petrol stops small engines, and a winter storage checklist for garden machinery.
Engine Oils & Car Fluids
Plain-English guides to engine oil and car fluids for modern cars and vans. Start with the basics, or use our Oil Finder to go straight to the right oil.
1Choosing oil
2About Millers Oils
3Brakes, steering & greases
All oil & fluid articles, newest first ↓
Engine Flush, Stop Leak and Driveline Flush: Oil System Treatments Explained
When to use Engine Flush, Stop Leak, Driveline Flushing Oil and Liquid Glaze Bust: how each works, how to use it, and when a treatment isn’t the answer.
Oil Viscosity Grades Explained: ISO VG, SAE and Why ISO 100 Equals SAE 30
What viscosity really is, how ISO VG and SAE grades work, why ISO 100 equals SAE 30, and the history behind the numbers, with a handy conversion chart.
Brake Fluid Explained: DOT 3 vs DOT 4 vs DOT 5 vs DOT 5.1
DOT 3, DOT 4, DOT 5 and DOT 5.1 brake fluid compared: boiling points, which ones mix, which your car needs and how often to change it.
Gearbox Oil Explained: Manual, Automatic, DSG & CVT Fluids
Which gearbox oil does your car need? Manual gear oil, ATF, CVT and DSG fluids explained, plus GL-4 vs GL-5, limited-slip diffs and when to change it.
Which Grease Do I Need? Copper, Red Rubber, Moly & Multi-Purpose Grease Explained
Which grease do I need? Copper grease, red rubber grease, moly and multi-purpose EP greases explained, with a quick picker and common mistakes.
Power Steering Fluid Explained: PSF vs CHF (Which Does Your Car Need?)
Which power steering fluid does your car need? PSF vs CHF explained, how to check and top up, warning signs and why you should never mix them.
Never heard of Millers Oils? Why Irish drivers are switching from the big brands
Never heard of Millers Oils? Who they are, why the big-brand name isn’t what protects your engine, and why Irish drivers are switching.
Premium engine oil for performance cars: the science behind Millers EE Performance
Why Millers EE Performance is a premium engine oil for performance cars: NANODRIVE technology, up to 24% less friction and the right OEM approvals.
Engine Oil Grades Explained: 5W-40, ACEA C3, and What the V Means
What 5W-40 actually means, what ACEA C1 to C6 and SAPS are about, what API SP covers – and what the V in Millers C3 V and C5 V stands for. A plain-English guide.
Automec DOT 5 Silicone Brake Fluid: Pros, Cons and When to Use It
DOT 5 silicone brake fluid never needs changing and will not strip paint – but it is not DOT 5.1, not for ABS, and must never be mixed with normal fluid. An honest guide.
